Heat Pumps

For heat pump installation and repairs, rest assured that Graham Heating & Air Conditioning will exceed your expectations.

What is a heat pump?
A heat pump is a device that moves heat from one location to another mechanically. A heat pump can keep your home warm in the winter and cool in the summer.

Air-Source Heat Pumps
An air-source heat pump pulls its heat indoors from the outdoor air in the winter and from the indoor air in the summer. An air-source heat pump can provide efficient heating and cooling for your home, particularly if you live in a warm climate. When properly installed, an air-source heat pump can deliver one-and-a-half to three times more heat energy to a home compared to the electrical energy it consumes. This is possible because a heat pump moves heat rather than converting it from fuel.

Ground-Source Heat Pumps
Also known as a geothermal heat pump, a ground-source heat pump extracts heat from the indoor air when it's hot outside, but when it's cold outside, it draws heat into a home from the ground. A ground-source heat pump system is a central heating and/or air conditioning system that actively pumps heat to or from the shallow ground. It uses the earth as a source of heat in the winter and a coolant in the summer. This design takes advantage of moderate temperatures in the shallow ground to boost energy efficiency and reduce operational costs.

Absorption Heat Pumps
Absorption heat pumps are air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water.

For questions about heat pumps or to learn which type is right for your home, call us today.
FURNACE

When it comes to repairing and maintaining your furnace, you can count on the team at Graham Heating & Air Conditioning. A furnace is a major appliance whose job is to provide heat to an interior space through air, steam, or hot water. The most common fuel source for modern combustion furnaces in the United States is natural gas. Other common fuel sources include propane, fuel oil, coal or wood.

We can install or repair the following types of furnaces:



  • Central Warm-Air Furnaces
  • Forced-Air Furnaces
  • Gravity Furnaces
How does a furnace work?
The furnace is typically divided into three primary components:

  • The burner, which includes the heat exchanger, draft inducer and venting. Here, a flame is drawn into the heat exchanger by the negative pressure produced by the draft inducer. The hot gasses produced by the combustion of the flame pass through the chambers of the heat exchanger, heating its metal walls. The gasses cool as they transfer the heat to the heat exchanger and then enter the draft inducer blower to be pushed into the venting pipes. The exhaust gasses are then directed out of the house through the vent pipes.
  • The blower, which creates a negative pressure on the intake side. This draws air into the ductwork return air system and blows air out through the heat exchanger and then into supply air ductwork for distribution throughout the home.
  • The controls and safety devices, which include a gas valve, ignition control, igniter, flame sensor, transformer, limit control, blower control board, and flame roll out switch. A safety system must be in place to stop the flow of gas if the furnace ever overheats.
Graham Heating & Air Conditioning can help you find the furnace maintenance service or plan that's best for you. Call today to learn more.
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